New provisions for shear lag in steel tension members

1996 ◽  
Vol 23 (1) ◽  
pp. 305-309
Author(s):  
Charles Albert
Keyword(s):  
Key Words ◽  
Parametric Study ◽  
Single Line ◽  
Shear Lag ◽  
Design Rules ◽  
Tension Members ◽  
Longitudinal Welds

The Canadian Standards Association Standard CAN/CSA-S16.1-94 provides new design rules for calculating the effective net area of steel tension members connected by a single line of weld, or by a combination of transverse and longitudinal welds. The significance of the new provisions on the design of angles is examined by means of a parametric study. Key words: shear lag, tension members, welded connections.

Analytical approach for shear lag in welded tension members

2006 ◽  
Vol 33 (4) ◽  
pp. 384-394 ◽  
Author(s):  
Georges Abi-Saad ◽  
Dominique Bauer
Keyword(s):  
Laboratory Tests ◽  
Analytical Approach ◽  
Steel Structures ◽  
Ultimate Stress ◽  
Shear Lag ◽  
Gusset Plates ◽  
Lag Effects ◽  
Elastic Plastic ◽  
Tension Members ◽  
Longitudinal Welds

The authors propose an analytical approach for calculating the reduction in strength of steel tension members due to shear lag effects. The approach is based on an assumed distribution of forces along inclined lines in the member ends, somewhat similar to the Whitmore concept used with gusset plates for bracing members. The method is demonstrated for a basic weld in shear at elastic, plastic, and ultimate stress levels. The method is then compared with the recommendations contained in standard CAN/CSA-S16-01 for elements connected by a single longitudinal weld and for elements connected by longitudinal welds along two parallel edges. The predicted strength of tension members with welded connections is compared with results from several laboratory tests. The proposed method could be used for calculating the reduction in strength due to shear lag effects of tension members with different sections.Key words: steel structures, trusses, tension members, welded connections, shear lag, Whitmore.

Computer analysis of thin-walled concrete box beams

1989 ◽  
Vol 16 (6) ◽  
pp. 902-909 ◽  
Author(s):  
Shahbaz Mavaddat ◽  
M. Saeed Mirza
Keyword(s):  
Key Words ◽  
Computer Analysis ◽  
Shear Stresses ◽  
Shear Lag ◽  
Applied Loading ◽  
Box Beam ◽  
Box Beams ◽  
Three Stages ◽  
Thin Walled ◽  
Normal And Shear Stresses

Three computer programs, written in FORTRAN WATFIV, are developed to analyze straight, monolithically cast, symmetric concrete box beams with one, two, or three cells and side cantilevers over a simple span or over two spans with symmetric mid-span loadings. The analysis, based on Maisel's formulation, is performed in three stages. First, the structure is idealized as a beam and the normal and shear stresses are calculated using the simple bending theory and St-Venant's theory of torsion. The secondary stresses arising from torsional and distortional warping and shear lag are calculated in the second and third stages, respectively. The execution times on an AMDAHL 580 system are 0.02, 0.93, and 0.25 s for the three programs, respectively. The stresses arising in each stage of analysis are then superposed to determine the overall response of the box section to the applied loading. The results are compared with Maisel's hand calculations. Key words: bending, bimoment, box beam, computer analysis, FORTRAN, shear, shear lag, thin-walled section, torsion, torsional and distortional warping.

Investigation of shear-lag in slotted HSS tension members

2021 ◽  
pp. 473-479
Author(s):  
R.M. Korol ◽  
F.A. Mirza ◽  
M.Y. Mirza
Keyword(s):  
Shear Lag ◽  
Tension Members

The shear lag effects on welded steel single angle tension members

2009 ◽  
Vol 65 (5) ◽  
pp. 1171-1186 ◽  
Author(s):  
H.T. Zhu, ◽  
Michael C.H. Yam ◽  
Angus C.C. Lam ◽  
V.P. Iu
Keyword(s):  
Shear Lag ◽  
Welded Steel ◽  
Lag Effects ◽  
Tension Members

scholarly journals Shear Lag Effects in Angles Welded at Both Legs

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Mohammad Abedin ◽  
Shervin Maleki ◽  
Nafiseh Kiani ◽  
Esmail Shahrokhinasab
Keyword(s):  
Numerical Methods ◽  
Plate Thickness ◽  
Numerical Analyses ◽  
Shear Lag ◽  
Gusset Plate ◽  
Lag Effects ◽  
Free Length ◽  
Steel Sections ◽  
Connection Length ◽  
Tension Members

The shear lag phenomenon is known to reduce the tensile capacity of tension members. There are various parameters affecting shear lag that have not been considered before. In addition, previous studies have been conducted mainly on single steel sections. Using numerical methods, the present study investigates the effects of relevant parameters on shear lag in single- and double-angle sections welded at both legs. The studied parameters are connection eccentricity, connection length, gusset plate thickness, member-free length, and connection-free length. The results of the numerical analyses show that, in single-angle connections, the effects of connection length, connection eccentricity, and gusset plate thickness are more pronounced, while in double-angle connections the last parameter is not very critical. Comparing the results with the AISC-LRFD predictions, it is concluded that the specification relations are conservative in most cases. In order to reduce the overconservatism, some new equations for shear lag estimate are introduced.

Modelling the influence of filler particles on surface geometry in drawn pet film

1996 ◽  
Vol 31 (1) ◽  
pp. 65-73 ◽  
Author(s):  
C F G Gerlach ◽  
F P E Dunne ◽  
D P Jones ◽  
P D A Mills ◽  
N Zahlan
Keyword(s):  
Process Design ◽  
Parametric Study ◽  
Large Strain ◽  
Deformation Behaviour ◽  
Surface Characteristics ◽  
Film Material ◽  
Surface Geometry ◽  
Design Rules ◽  
Particle Characteristics ◽  
Pet Film

The large strain deformation behaviour of particle-filled PET (polyethylene terephthalate) film has been investigated numerically in a parametric study employing the ABAQUS finite element solver. The behaviour of PET has been modelled by Mooney-Rivlin rubber elasticity theory. The results of the parametric study show that small variations in the particle characteristics lead to significant differences in the surface characteristics, which are likely to change the friction and manufacturing properties of the film material. A simple methodology has been established for relating the particle characteristics to the surface properties. Process design rules have been developed, from which the surface characteristics can be determined from a knowledge of the particle characteristics. Good comparisons have been achieved between surface characteristics obtained numerically and those obtained from the simple design rules.

Ultimate strength of a double-tee tubular joint subjected to combined chord compression and brace out-of-plane bending

1998 ◽  
Vol 33 (5) ◽  
pp. 385-394 ◽  
Author(s):  
C T Kang ◽  
D G Moffat ◽  
J Mistry
Keyword(s):  
Finite Element ◽  
Ultimate Strength ◽  
Parametric Study ◽  
Experimental Tests ◽  
Design Rules ◽  
Linear Finite Element ◽  
Out Of Plane ◽  
Tubular Joint ◽  
Plane Bending ◽  
Different Levels

The effects of chord axial compression on the ultimate strength of a double-tee (DT) tubular joint subjected to brace out-of-plane bending have been studied both experimentally and numerically. The results from four experimental tests with different levels of chord compression are presented, together with the results of a parametric study using non-linear finite element procedures. The results are compared with the American Petroleum Institute's design rules for DT joints subjected to combined brace and chord loading.

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